#311581#311581

#311581 is a dark, vivid violet. Relative luminance 0.028; OKLCH L 32.2% C 0.164 H 284.3°. Best body text is #FFFFFF at 13.51:1 contrast (WCAG AA passes).

Color values

HEX	#311581
RGB	rgb(49, 21, 129)
HSL	hsl(256, 72%, 29%)
HSV	hsv(256, 84%, 51%)
CMYK	cmyk(62%, 83.7%, 0%, 49.4%)
CIE-LAB	lab(19.11, 41.99, -55.03)
CIE-LCH	lch(19.11, 69.22, 307.35°)
OKLab	oklab(32.18% 0.0403 -0.1586)
OKLCH	oklch(32.18% 0.164 284.3)
XYZ	xyz(5.4960, 2.7739, 21.0104)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311581 #658115

analogous

#152F81 #311581 #671581

triadic

#311581 #813115 #158131

tetradic

#311581 #81152F #658115 #158167

square

#311581 #81152F #658115 #158167

split-complementary

#311581 #816715 #2F8115

monochromatic

#0A041A #1D0C4C #311581 #451EB6 #5F33DE

Accessibility & contrast

On white

13.51

#311581 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#311581 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311581

13.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311581	#FFFFFF	#000000	##FFFFFF
##311581	1.00	13.51	1.55	13.51
#FFFFFF	13.51	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003184

Deuteranopia (green-blind)

#002B7F

Tritanopia (blue-blind)

#00364C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #311581;
/* rgb */ color: rgb(49, 21, 129);
/* oklch */ color: oklch(32.2% 0.164 284.3);

Tailwind

colors: {
  custom: {
    50: '#7557a7',
    500: '#311581',
    950: '#000000',
  },
}

SCSS

$custom: #311581;
$custom-light: #7557a7;
$custom-dark: #000000;

JSON

{
  "hex": "#311581",
  "rgb": {
    "r": 49,
    "g": 21,
    "b": 129
  },
  "hsl": {
    "h": 255.556,
    "s": 72,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32182,
    "c": 0.16368,
    "h": 284.3
  },
  "luminance": 0.02774
}

Semantic roles & 50–950 ramp

primary

#311581

secondary

#96B63C

accent

#EF39C0

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #311581

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →